[Ugh. He hates explaining this. It's a shitty reason and it doesn't even make sense to him.]
I do the things that he can't or won't do. I'm the one who's gotten most of his kills. I protect us. I've got a temper. So Allelujah thinks it's too dangerous for me to talk to anyone... unless, of course, he's too much of a fucking wimp to do something. Then it's my turn.
He wants to 'protect you from me' or some shit like that. As long as you don't piss me off, I won't kill you. But he's too scared of me - of himself - to even try.